Underhood Relay/Fuse Block

[65 Dartman]

If you are using an underhood relay and fuse block, what are you using? Is it from another vehicle or aftermarket? Besides sufficient relays for headlights, electric radiator fan, etc, I am thinking a block with maxi fuses would be ideal since a maxi fuse could replace fusible links. If you have any pictures, please post them.

 

[BillGrissom]

Search for my post "Modernized Engine Wiring" where I installed a JY box from a 91-94 Jeep. I am finishing the same for my Valiant. 67Dart273 is the only other I read of using a JY box (from Mopar minivan). Several have installed expensive after-market relay boxes.

Mine were both a lot of work, and maybe not warranted, but it does give me easy support for EFI, fans, and such and cleans up the firewall. I don't have any fusible links, just many fuses. If you clean your bulkhead connector contacts and install a new headlight switch, I doubt you need relays for standard headlights, though I do since I had 7 relays in my box.

 

[RedFish]

Everyone marches to a different drum. A relay bank from some other vehicle will have wrong color wires, wrong labeling, etc... You might know whats what but the next owner will be screwed. The next owner of my car is my grand daughter ( dont even go there ).
I purchased relays, wire, etc.., made my own enclosure from a plastic glove box liner, revised the factory wiring diagrams to document my changes, printed those to supliment the service manual in the car at all times.
All the relays used are identical. If the day should come when one needs to temprorarily forfiet the horn to get the low beams on again, doable, simply move the relays/connectors.

 

[67Dart273]

I used a box from a 90's Voyager. Redfish is right, there's some rewiring, but mine is no longer a factory harness, anyhow.

Also, Bussmann makes/ markets some boxes which can be configured in many ways, different relays, fuses, etc:

 

[inkjunkie]

I used one from a mid 90's Ford Ranger. I was able to find the terminals so I could run all new wire from the box, no splicing into the Ford stuff. Just documented what wire was to what and drew a schematic for it. If you need to do something like this what the factory did and the schematic that goes with it will be sort of irrelevant......

 

[jos51700]

I used one (I keep mine all Mopar) but I hunted until I found one that had only what I wanted, so the factory harness is untouched.

So, electric fuel pump, electric fans, radio accessories, Air-conditioning, engine shutdown relay (aka MSD box), etc. are all stuff I've added, but are all on the new box. Then I drew up a wiring diagram, laminated it, and keep it in the glove box for road trips.

Look under the hood of a first-gen Neon. They have a power-bus that is real easy to tie into the factory wiring with a simple relay or fusible link, depending on what you want.

 

[inkjunkie]

Look under the hood of a first-gen Neon. They have a power-bus that is real easy to tie into the factory wiring with a simple relay or fusible link, depending on what you want.

Thanks for the tip. Wrecking yard in Spokane had a few dozen Neons last time I was there, next time I am over there I will be stopping in...

 

[BillGrissom]

My engine harnesses have all new wires. I still have my original engine harnesses if a later owner wants to revert to those brittle wires, which were already hacked by PO's. I doubt I will ever sell the cars anyway, and I have detailed drawings of what my new wiring. I tried to use Mopar color wires. The Jeep wires are just short stubs within the box that I soldered to since I couldn't buy the correct relay terminals.

The only things I used from the factory harnesses were the bulkhead connector shells. I put new pins on my harness. The factory pins are still on those harnesses and I have the clutter of factory voltage regulator and relays (horn, starter) in a bag.

 

[jos51700]

Pro tip.

Make a new wiring harness diagram!

 

[65 Dartman]

While doing some searching on this subject, I found http://tinyurl.com/auoseqj - scroll down a bit for the modular system. This system is out of England. Also http://tinyurl.com/a6uryol. Go to home on the left side of the page and scroll all the way down for info on their modular system. Either might be more expensive than picking up a junkyard module but easrier to configure

 

[BillGrissom]

65 Dartman,
Great find. They actually have the relay terminals I was missing, which would have been much easier and eliminated all the solder & heat shrink connections I had to make. As far as their entire relay box solution, they want you to cut a new hole thru the firewall, though you could do different. By the time you add up all the parts to make a box, maybe >$200, plus shipping from England.

 

[pauly v.100]

Bussman enclosure with five 30a fused relays.